Improvement in street-car heaters



G. G. BOVEY; Street-Gm Heater.

No. 211.963. Patented Feb. 4, 1879.

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"NITED STATES ATENT .FFIGE.

GEORGE o. BOVEY, OF coLUMBUs, ASSIGNOR OF ONE-HALF HIS RIGHT TO GEORGEB. KEEPER, on CINCINNATI, OHIO.

IMPROVEMENT IN STREET-CAR HEATERS.

Specification forming part of Letters Patent No. 211,963, dated February4, 1879 application filed Novemberflt), 1878.

To all whom it may concern:

Be it known that I, GEORGE G. BOVEY, of Columbus, Franklin county, Ohio,have invented certain new and useful Improvements in Street-Gar Heaters,of which the following is a specification:

This invention relates to those heaters which are placed transverselybeneath the floor of a street-car for the purpose of discharging warmair directly into the same; and the first part of my improvementscomprises a novel construction of the heater proper. This part of theapparatus consists of a furnace or tirebox having a fuel'door at oneend, and a horizontal smoke-pipe attached to the opposite end of saidfurnace, the horizontal pipe being furnished with a vertical extensionpassing up into the car under one of the seats. The pipe is then carriedalong under this seat to one end of the car, where a vertical outlet isfitted to said pipe. Air-chambers are arranged on the sides of thefurnace, but not at the top of the same, and these air-chamberscommunicate with a drum that incloses the horizontal smoke-pipe, thedischarging end of said drum being provided with a vertical extensionthat surrounds the vertical extension of the smoke-pipe.

The top plate of the furnace has cast with it, or otherwise appliedthereto, a cylinder or dome, closed at its upper end, but open atbottom, to allow the fire and smoke to circulate freely within saiddome. This closed cylinder or dome projects upwardly a suitable distanceinto the car, and is located under the opposite seat, beneath which issituated the vertical extension of the drum.

By this arrangement heat is radiated directly under one seat from thedome, while hot air is discharged under the opposite seat from thevertical extension of the drum.

The second part of my invention consists in applying a deflecting-plateto the rear end of the above-described furnace, so as to divert theproducts of combustion upwardly into the closed dome, as hereinaftermore fully described.

In the annexed drawings, Figure 1 is a partially-sectionized elevationof a street-car provided with my heater. Fig. 2 is a longitudinalsection through the lower portion of the car. Fig. 3 is a transversesection of the same. Fig. 4 is a vertical section of the firebox andheater, taken transversely of the grate-bars; and Fig. 5 is a horizontalsection of said firebox and heater.

A represents the body, a the floor, and B B the opposing seats, of anordinary street-car. Attached to one side of this car by bolts 0 is thefront plate, C, of the heater and furnace, and said plate is providedwith a fire-door, D, an ash-door, E, and one or more air-inlets, F; but,if preferred, said inlets may be made in the bottom plate, U, of theheater, as shown at F in Fig. 4.. The fire-chamber G is formed by thisplate 0, a rear plate, H, and two side plates, H H, said rear plate, H,being provided with a collar or neck,'h, to which is attached thesmoke-pipe I. J are the grat ebars, beneath which is situated theash-pit c.

If preferred, the fire-chamber Gr maybe provided with a plate, K, todeflect upwardly the products of combustion and prevent them beingdischarged too directly into the smokepipe I.

Fire-chamber G is surrounded on both sides and at its rear end with anair-heating chamber, L, having a collar, 1, for attachment of the drumM, which drum is traversed axially by the smoke-pipe I. Furthermore,this drum is furnished with a vertical extension, M, to receive thecorresponding extension I of said smoke-pipe. The top plate, N, of thefirechamber has cast with it, or otherwise applied thereto, a dome, a,open at bottom, so as to allow the products of combustion to enter thesame, as represented in Fig. 3.

P is a jacket or shield attached to this top plate, N, and surroundingthe dome a, so as to afl'ord an annular space between these membersa andP of the heating apparatus. Located at the front upper portion of thetirechamber is a passage, R, that allows afree circulation of air totake place between the side chambers of the heater L. (See Figs. 3 and5.) This passage also prevents the top plate, N, becoming so hot as toburn the sills of the car. S are straps or rods wherewith the heatingapparatus is suspended from the floor a. The extension I of thesmoke-pipe may project vertically through the roof of the car, as seenin Fig.1; but I prefer carrying said pipe horizontally along and underthe seat B, as represented at I in Fig. 2, and thence up in the cornerof the car at I; or this extension I may have a second horizontal branchextending to the other end of the car, and provided with a verticaloutlet, by which arrangement two independent channels will be affordedfor the escape of smoke from firechamber G. This secondary smokepipe isrepresented by the dotted lines T T in Fig. 2. In fitting my heater to astreet-car, the shield P is made of such length as to project, say, fiveor six inches above the floor a, and the dome n is carried up almost tothe seat B. The drum M is then applied to neck I, so as to locate theextension M under the opposite seat, B, the open upper end of saidextension being about on a level with the top of jacket I By thisarrangement the extension M and jacket I serve as guards or shields toprevent contact of the passengers feet or clothing with the heated pipeI" and dome n.

The pipes I and I, and also the ones T T, if desired, are then slippedonto the extension I, as seen in Fig. 2. Fire is now started in furnaceG, and the cool air entering at the inlets F or F is thoroughly warmedby contact with plates H H H, pipe I, and extension I, the heated airescaping from the open end of extension H directly into the car andunder seat B, as indicated by arrows in Figs. 2 and 3.

Radiation also takes place from the sections 1' and I of the smoke-pipe.In addition to the heat thus thrown off by the apparatus, considerableradiation takes place from the top plate, N, and dome n, and isconducted into the car by means of the jacket P, as indicated by arrowsin Fig. 3. It will thus be seen that all the heat thrown 0E by theapparatus is utilized in warming the car, and, consequently, the fireneed be replenished only at the beginning of each trip, which economy inthe use of fuel enables me to locate the firedoor D on the outside ofthe car, where the passengers cannot tamper with it. Another advantagedue to this external location of said door is, that smoke and sootcannot escape into the car when the fire is replenished. It will beapparent that my heater does not interfere in the least with thecapacity of the car for carrying passengers, while, at the same time,sufiicient space is afforded below the apparatus for applying thebrakerods-and shield to prevent contact with said pipes.

Instead of carrying the pipe I up in the corner of the car, as shown, itcan be attached to the outer end of the car in such a manner as to warmthe driver and passengers occupyin g the front platform.

I am aware it is not new to locate a hot-air apparatus beneath the floorof a street-car, and arrange the heater to discharge the warm air underthe seats of the same, as such a device is seen in Letters Patent No.191,056, issued May 22, 1877, to E. 0. Huntington; and therefore, myclaim to the heater proper is expressly limited to the constructionherein illustrated and described, in which a heat-radiating dome islocated under one seat, while the only exit for the warm air is situatedunder the opposite seat.

I claim as my invention- 1. An improved street-car heater consisting offurnace (3r, smoke-pipe I, and extension I, said members Gr I I beingincased, respectively, within the air-heatin g chambers L M M, the exitM of said chambers being located under the seat B of the car, while theopposite seat, B, has situated beneath it a cylinder or dome, a,completely closed at its upper end, and communicating at its lower oropen end with the furnace G, in the manner described, and for thepurpose set forth.

2. In a car-heatin g apparatus of the class specified, the combinationof plate K and dome n, said plate being placed in the furnace G anddisposed athwart the entrance of smokepipe I, to deflect the products ofcombustion upwardly into the closed dome at, whose lower endcommunicates directly with said furnace, in the manner herein described.

In testimony of which invention I hereunto set my hand.

GEORGE O. BOVEY.

Witnesses: I

J AMES H. LAYMAN, RANKIN D. J ONES.

